Expandable capacity
This add-on battery connects to DELTA Pro to double the total capacity to 7200 Wh. Connect two of them to DELTA Pro to get an amazing 10.8 kWh for off-grid use.

Convenient charging
Charging via solar panels, mains sockets, electric vehicle charging stations or the EcoFlow Smart Generator is easy. Connect the extra battery to DELTA Pro and they charge and discharge together.

More watt hours at home
The extra battery can be integrated into your home's wiring when connected to DELTA Pro. These battery units thus become part of the power supply for peak consumption and emergencies in your home.

Ready for emergencies
This auxiliary battery can be charged directly from the EcoFlow Smart Generator outdoors, giving you another option for emergencies.

LCD display
The built-in screen gives you the same information about battery level, remaining charge time, remaining usage time and more. You can check the charge level anywhere with the EcoFlow app.

Note: This product is designed exclusively for the EcoFlow DELTA Pro portable power station!

Technical data:

• Dimensions (L x W x H): 63.5 x 42 x 28.4 cm
• Weight: 38 kg
• Capacity: 3600 Wh, 48 V
• Input for additional battery connection: max 3200 W, 48 V
• Output for additional battery connection: max 4260 W, 48V
• Shelf life after full charge: 1 year
• Life cycle: approx. 3500 cycles to 80% capacity
• Optimum operating temperature: 20 to 30 degrees
• Discharge temperature: -10 to 45 degrees
• Storage temperature: -10 to 45 degrees / optimum: 20 to 30 degrees
• Protection circuits:
  • Overload protection
  • Overtemperature protection
  • Short-circuit protection
  • Undertemperature protection
  • Low voltage protection
  • Overcurrent protection